This game is a lot like 4 Square except there are 9 squares and you play in the air vs the ground. Hence the name, 9 square in the Air! Your goal is to stay in the game as long as possible. Simply hit the ball out of your square into any other square to stay in. However, if the ball falls into your square or you hit it out of bounds, you're out and move to the end of the line to start over.